Digital-audio-signal recording apparatus

Abstract

When a write operation is to be performed for writing digital audio data (track), stored on a hard disk, to a CDR disk in an audio-digital-signal recording apparatus, control is performed, prior to execution of the write operation, such that the digital audio data stored on the hard disk can not be accessed by any other operation than the write operation, to thereby cause the other operation to regard the digital audio data as already erased from the storage section. After completion of the writing or copying of the digital audio data to the disk-shaped storage medium, the digital audio data are actually erased from the hard disk. Thus, even when power failure or shutdown occurs immediately after the copying of the digital audio data and before initiation of the audio data erasure from the hard disk, any operation, other than the write operation, can be prevented from accessing the digital audio data, so that the copyright on the digital audio data can be protected. As a result, the digital-audio-signal recording apparatus can prevent chain-like digital copying and thus can be properly used as consumer equipment.

1. A digital-audio-signal recording apparatus, comprising:
 a storage section storing digital audio data; 
 a write section that writes data on a disk-shaped storage medium; 
 a control section that, when a write operation is to be performed by said write section for writing the digital audio data, stored on said storage section, to the disk-shaped storage medium, evaluates the status of an erasure state flag and if the erasure state flag is not indicative of an erased state, sets the erasure state flag within file management information to the erased state without erasing the file management information on said storage section, such that the digital audio data stored on said storage section cannot be retrieved by any processing operation other than said write operation, then causes said write section to write the digital audio data to the disk-shaped storage medium, and after completion of the writing of the digital audio data to the disk-shaped storage medium, the control section sets file validity information for the digital audio data stored in the storage section to non-valid to disable further readout of the digital audio data stored in said storage section and then erases the digital audio data from said storage section. 
 
   
   
     2. The digital-audio-signal recording apparatus according to  claim 1 , wherein the control section includes a subcode detection section to extract subcode information for the disk-shaped storage medium. 
   
   
     3. The digital-audio-signal recording apparatus according to  claim 1 , wherein the control section further includes an At Attachment Packet Interface (ATAPI) interface, an digital audio interface, and an analog audio interface, all of which are configured to receive and output audio data. 
   
   
     4. The digital-audio-signal recording apparatus according to  claim 1 , wherein the file management information on said storage section corresponding to the written digital audio data is updated to reflect the write operation performed.